1945 GMT:Mali. French President Francois Hollande has said his Government will help rebuild Mali, three weeks after France's military offensive that swept Islamists from urban areas in the north of the country.

Hollande declared French troops would stay in Mali "as long as necessary", handing over to African troops "once the sovereignty of Mali is restored".

"Terrorist groups have been weakened, but not disappeared," Hollande said.

Speaking alongside the French President, Mali's interim leader, Dioncounda Traore, thanked France for freeing the north to from "barbarity and obscurantism".